Indicator-lock.



K. D. SENIOR.

INDICATOR LUCK.

APPLxcATIoN FILED Aue.2o, 1914.

Patented July 13, 1915.

l 75g/vw@ 72/071' COLUMBIA PLANOURAPH CO.. WASHINGTON, D C.

KAROP D. SENIOR, OF BOSTON, MASSACHUSETTS.

iNnroATon-LOCK.

intensiv.

To aZZfwwm t may concern:

Be it known that I, KARoP D. SENIOR, a citizen of the United States,residing atl Boston, in the county of Sudolk and State of Massachusetts,have invented new and useful Improvements in indicator-Locks, of whichthe following is a specication. y

This invention relates to improvements in indicator locks and has forits object to provide a lock particularly adapted for the inside of adoor and to be operated only from said inside yto* lock and unlock saidydoor, said lock having means arrangedgupon the exterior ofsaid dooradapted to Vindicate the locked and unlocked condition of said lock.

Another object of the invention is to providemcans adapted to operatesaid indicator to indicate thecondition of theroom, that is to. say,whether the room has been properly set in order or not.

Still another object ofthe inventionis to provide a lock which isnormally adapted to be operated to unlock the door only from the insidethereof, but which may in cases of emergency be operated 'y from theoutside thereof.

The inventionconsists in the combination and arrangement of parts as setforth in the following specification and particularly pointed out in theclaims. n

Referring to the drawings: Figure 1"is a front elevation of a lock andstriker embodying my invention, portions of the casing of said lock`being broken away to more clearly illustrate the same. Fig.2 is adetail perspective view of the striker illustrating the manner in whichit is to be attachedr to thedoor casing# Fig. 3 of the bolt togetherwithits operatively connected parts and the means for reciprocating saidbolt. Fig. 4l is a section taken on line may be secured either to a dooror a door casing` preferably to the door Aby means of screws 9, while tothe other member is secured a striker 10 having a recess 11 adapted toreceive the end of a bolt. lThe striker 10 is provided/with earsv 12extending longitudinally thereof each adapted to receive a Speccaton ofLetters Patent.

is a detail "view Patented July 13, 1915.

Application fileanugust 2o, 1914. serial No. 857,785.

screw 13. The face of the material constituting the striker is extendedinwardly at 14 and is also adapted to receive a screw 15 which issecured in the face of the door jamb when the striker is secured to thatpart, or

in the edge of the door when said striker is A bolt 16 is arranged toreciprocate in the casing 8 and'is preferably a double ended bolt, theends 17 -and 18 thereof adapted to protrude from opposite ends of thecasing 8 through holes 19 and 2O respectively iny said casing. Y

A plate2l is adapted to fit the inner side of the easing 8, which is theopen side of the casing, and retains the bolt 16 in its proper positionwithin said casing. rIhe plate: 21 and the front wall 22 of the casingare provided with cylindrical holes 23 and 211 rcspectivelyysaid holesalining one with the other. lnto these holes is inserted a cylindricalmember 25, said cylindrical member having a lateral projection 26 whichnormally extends upwardlyoblique to a vertical plane extending throughthe axis of said member 25. to extend into a recess or notch 27 in thebolt 16, said member preferably constituting the means whereby said boltmay be reciprocated or moved from its locked to its unlocked position orinto and-out of engagement with The projection 2G is adapted l theystriker 10. Pins 28 and 29 are provided inthe casing 8 to limit thekpivotal movements of said cylindrical member, said pins being engaged bysaid lateral projection.

f A variety of'means may be employed for Y rotating themember 25 suchfor instance as a thumb'nut which may be secured thereon,

but not shown in the drawings. One of the objects of the inventionhowever is to proaccessible only from the outside thereof, the

inner keyhole being plugged. For this reason the cylindrical member 25is arranged to receive the key adaptedto ylock the door from'theoutside. For this purpose the rotary member 25 is provided with acylindrical hole 30 which constitutes an eye and a slot 31 extendingfrom said cylindrical hole 30 downwardly and alining with a slot 32formed in the front wall 22 of the casing, the pin 33 of the key beinginserted in the cylindrical hole 30, while the web 34 of the key engagesopposite edges of said member which constitute said slot 31 whereuponsaid cylindricalmember may be rotated. As the key and the cylindricalmember are rotated Within the casing the web 34 of said key'is moved outof valinenient with the lslot 32 and will be held by the front wall ofthe casing within the keyhole as'long as the bolt remains in its lockedposition.

Operatively connected with the bolt 16, but preferably upon the oppositeside of the door A from thatupon which said bolt is arranged is anindicator 35, said indicator ybeing adapted to indicate the positions ofsaid bolt, that is to say, whetherV the same is in its locked orunlocked positions. The indicator preferably consists of a disk 36arranged within a casing 37 to rotate .upon a projection or `pin 33formed in said casing 37, said disk lhaving upon its face a plurality ofdifferentiating characterspreferably consisting of segmental sectionsof:

different colored Celluloid, such as red and white as -at 39, 39 and 40,40 respectively and secured in anysuitable manner thereto. The face 41of the kcasing 37 is .pro vided with openings 42, 42 preferablydiametrically disposed relatively to the axis f of the disk 36, whilethe red sections 39` 39 are likewise oppositely disposedr relatively vtothe axis of said disk and so are the white vsections 40, 40, thus bothred sections will be simultaneously displayed or both white lsectionswill simultaneously be displayed according to the position of thebolt,the white sections preferably indicating thel unlocked position ofthe bolt, while the redsections indicate the locked position thereof.

The casing 37 issecured to the outer yside of the door A as hereinbeforestated by means of screws 43 which extend through said door and from theinner side thereof, preferably from a plate 44 fast to said door, theinside of the casing 37 being open. As the bolt 16 is reciprocated inthe casing 8 the disk 36 will be rotated by means extending through saiddoor yandpreferably consisting of a fiat key or connecting rod 45,

. one end of which is adapted to fit a trans# verse slot 46 formed inthe disk 36, said key being detachably securedwithin said slot by a spur47 extending from one side of the slot 46 through a hole 47 formedadjacent the end kof said key. The `oppo site end of the key 45 isadapted to be in is preferably slotted at 51 to engage a pin 52 carriedby the bolt 16 hereinafter more specifically described. By thisconstruction it will be seen that each time the bolt is reciprocated thedisk will be rotatedfrom one of its positions to the other. To assisti'nretarding the rotations-of 'the disk 36 the same is yieldingly held inits position upon the projection 38 preferably by means of a ,curved`spring .53, opposite ends of` said spring engaging the rear face of saiddisk. The central .portion of saidv spring is recessed at 54 to receivethe hub of the disk 36, said central portion beingalsoadapted to lit arecess 55 formed in the face of a plate 56 which is detachably securedat the rear of the casing 37 preferably by means of lugs` 57formed onsaid casing 37 and enT` gaging depressions 53 in the adjacent faceofsaid plate, said spring 53 being interposed between said plate and thedisk 36 and prevented from rotating with said disk by the recess 55. Inaddition to indicating on the bolt 16 preferably between lugs 62 and 63,and upon said slide ythe pin 52, here# inbefore referred to whichengagesv the arm 50 in the slot 51, is formed. During the normaloperation of the ,lockv or atr least when the bolt is moved from one'ofYits extreme .positions` to the other, the slide 61 ismoved therewith, arelative movement between said slide and said bolt at this time beingprevented bya lever or tumbler 64 pivoted upon a'scr'ew 65 fast to saidbolt and arranged preferably upon the opposite side of said bolt fromsaid slide. The tumbler 64 has a projecting portion 66 whichextendsbeneath said bolt 'to the opposite side thereof and is providedat said opposite side with 'a notch. 67 which is adapted to receive a,depending lug 68formed on said slide, said projecting portion 66 beingyieldingly retained in contact with said lug by a spring 69 one end vof,which engages a projection 70 on said tumbler 64. The opposite end ofthe spring 69 is secured to a lever 71 which is lprovided to engage thelateral projection 26 on thecylindrical member 25 Aand rretain saidcylindrical member in its locked and unlocked positions. The end 72 ofthe projecting portion 66 is arranged to slidably engage the bolt 16 at73 to guide said tumbler during its pivotal movements.

To operate the slide relatively to the bolt the key 59 is inserted inthe keyhole 60 and the web thereof moved in the proper directionaccording` to the position of the bolt to engage said slide. Should thebolt be in the position indicated in Fig. 3 the key 59 will be rotatedin the direction of the arrow a, the web thereof engaging a face 74; atthe right hand end of a recess 75 formed in the slide 61, but beforesaid slide may be moved by said key it is necessary to depress thetumbler 641;, therefore said tumbler is also engaged by the web of saidkey along the straight portion 76 thereof which projects suiiiciently tocause said projecting portion GG of said tumbler to be lowered to clearthe depending lug 68. rlihe tumbler is held in said lowermost positionuntil the slide has been moved su'l'liciently to cause the end 83thereof to engage the inner face 17 of the end 17 of said bolt andwithdraw the depending lug 68 from alinement with the notch 67. Afterthe key has been turned completely around and the web thereof hasescaped from the face 74 on said slide the tumbler is partiallyreturneduntil the projecting portion 72 engages the lower end of thedepending lug 68 as will be seen by the dotted positions of said membersin Fig. 3. The key 59 may then be withdrawn as it is of no further use,it being impossible to return the slide to its normal position by meansof said key for the reason that should said key be revolved in theopposite direction to that indicated by the arrow et the extremity ofthe web of said key will engage the end 7'? of the straight portion 7Gof the tumbler instead of said straight portion, thereby preventing therotation of said key in that direction. Should the bolt 16 be at theopposite end of its throw the key 59 will be rotated in the oppositedirection and the web thereof engage the face 7S at the opposite end ofthe recess rather than the face 7i to more said slide until theprojection Si engages the inner face 19 of the end 19 of the bolt, orshould an attempt be made to return the slide 61 to its normal positionthe web of said key would strike the opposite end 79 of the straightportion 76 and thus prevent the depressing of the tumbler. During theoperation of the slide G1 by means of the key 59 the pin 52 is moved toits intermediate position as indicated by the dotted circles 80, thusmoving the indicator but half of its throw, consequently displaying halfred and half white instead of all red or all white which indicates thatthe room has been properly cared for by the attendant and in readinessfor the occupant thereof to enter which he or she may do by unlockingthe regular lock of the door and after entering the lock 16 isreciprocated to lock said door upon the inside preferably by the samekey. During this movement of the bolt the slide 61 will be movedtogether with said bolt on account of the friction between theprojecting portion of the tumbler and the depending lug 68 of said boltuntil the end'Sl is moved into contact with the end 82 of the casing 8which prevents further movement of said slide, but permits the bolt tocontinue until said depending lug 68 alines with the notch 67, which isits normal position. Should said bolt be moving in the oppositedirection from that just described the end S5 thereof will engage thecorresponding end 8G of said casing and move said slide in theoppositedirection to that mentioned. As hereinbefore stated any movement of thebolt 16 subsequently to the setting lof the yindicator in itsintermediate position willy cause said indicator to be returned to itsnormal position by the means hereinbefore described.

The bolt 16 is operable only from within the room with the result thatshould anything' happen tothe occupant of the room and hebe unable tounlock the door any one wishing to render him assistance would beprevented from entering said room. For this purpose a keyhole 8? isprovided in the door A alining with the cylindrical hole 8O andextending to the outside of said door, said hole 8"? being normallyclosed or sealed by a projecting portion 88 preferably formed upon the'casing 37 which may be chipped olf along the line b-b Fig. 6 by a coldchisel or some like instrument when the case so demands.v permitting amaster key 89, as indicated in dotted lines Fig. Li, to be insertedtherethrough to rotate the cylindrical member25, said key being the samefor all locks of` this type.

llhen it is desired to arrange the lock for a door swinging in theopposite direction from that referred to the cylindrical member, whichis identical in construction at opposite ends, is removed and placed endfor end, thus bringing the lateral projecting portion 26 upon theopposite side of the vertical plane referred to or in the positionindicated in dotted lines in Fig. f5, although at this time the slot 81will remain as in full lines in said figure, while the end 17 of thebolt will be protruding from the casing 8 rather than the end 19. ltwill also be necessary to withdraw the connecting rod or key i5 from theslot fl-S and the indicator tumbler 50 rotated to aline the other ofsaid slots 43 with said rod in order that the white differentiatingcharacters may be presented to view at the openings l2 in the casing 37,thus putting said lock in a condition to be operated as hereinbeforedescribed.

iis

`While I have herein shown and described one speciic embodiment of myinvention forillustrative purposes, and have disclosed 'the invention islimited-neither to the mere details or relative arrangement ofparts, norto its specific application herein shown, but that extensive deviationsfrom the illustrated form or embodiment of the invention may be madeWithout departing from the principles thereof.

Having thus described my invention What I claim and desire by LettersPatent to secure is:

l. A lock having, in combination, a bolt, a slide mounted on said bolt,a tumbler adapted to normallyl prevent a movement of said sliderelatively to said bolt, yand an indicator operatively connected withsaid slide adapted to indicate the locked and unlocked positions of saidbolt, said indicator being f arranged to operate independently of saidbolt.V

2. A lock having, in combination, a bolt, means to operate said bolt, aslide mounted on said bolt adapted tonormally move with said bolt, anindicator operatively connected with said slide, said indicator adaptedto indicate the extreme positions of said bolt, said slide adapted to bemoved relatively te said bolt to present a different character from thatindicating the extreme positions of said bolt, and means renderedoperable by a subsequent movement of said bolt adapted to return saidslide to its normal position.

3. A look having, in combination, a bolt, a slide mounted on said boltand movable relatively thereto, means to lock said slide on said bolt toprevent said relative movement, means operatively connected Withsaidslide adapted to indicate the eXtreme positions of said bolt, saidmeansalso adapted to indicate the position of said slide when the samehas been moved relatively to said bolt.

4. A lock having, in combination, a bolt, a slide mounted on said boltand movable relatively thereto, a tumbler adapted to normally prevent arelative movement between relatively thereto, a tumbler adapted to en-Vgage said slide and lock the same en said bolt, a spring` adapted toyieldingly retain said tumbler in engagement with said slide, anindicator operatively connected With said slide adapted to indicate themovement of said slide relatively to said bolt.

6. A lock having, in combination, a bolt, a slide mounted on said boltvand movable relatively thereto, stops on said bolt adapted to limit themovements of said slide relatively thereto, and an indicator operativelyconnected with said slide.

7. A loclr having, in combination, a bolt,

a slide mountedon said bolt and adapted to be moved relatively thereto,an indicator operatively connected With said slide, means to reciprocatesaid bolt and said slide, means to reciprocate said slide relativelytosaid bolt, and means rendered operative by a sub sequent movement ofsaid bolt adapted to return saidy slide to Vits normal position on saidbolt.

8. A lock having, in combination, a bolt, aslide mounted on said bolt, atumbler adapted to normally prevent a movement of said slide relativelyto. said bolt, means adapted to move said slide in one direction on saidbolt, and means rendered operative by a subsequent movement of said boltadapted to move said slide in the opposite direction onV said bolt.

ln testimony whereof l have hereunto set my hand in presence of tivosubscribing Witnesses.

KARGP D. SENIQR. llllitnesses p SYDNEY E. TAFT,

MARGARET E. HORN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of latents,

Y Washington, D. C.

